Sigma 19mm f/2.8 EX DN is the second lens in the new series of lenses for mirrorless cameras that Sigma has introduced in early 2012. The lens currently is available for both NEX as well as mFT cameras and retails at ~$199 (as of April 2012).

Sigma 19mm F/2.8 Micro Four Thirds Lens This moderate wide angle lens is currently available to fit both Micro Four Thirds and Sony NEX cameras and costs around £170. It sports a bright f/2.8 aperture and a newly developed linear focus motor.

There are a surprising number of alternatives in this category - wide primes for mirrorless cameras - so Sigma's offering comes at an interesting time. It holds its own in our tests, providing a sharp image even wide open at Æ’/2.8, with only slightly notable chromatic aberration in the corners.

A couple of upcoming lenses that I’m looking forward to trying out are the Sigma 19mm and 30mm f/2.8 models for NEX and Micro Four Thirds cameras. I’m particularly looking forward to getting a production model of the 30mm f/2.8 lens in the NEX mount since it works out to a 45mm-equivalent...

This lens is available in either a micro four thirds mount for Olympus and Panasonic cameras or an E mount for the Sony NEX range. On MTF cameras the film equivalent focal length is 38mm and on the Sonys, with the larger sensor, it is 28.5.

The Sigma AF 19mm f/2.8 EX DN shares a couple of characteristics with its sister lens, the Sigma AF 30mm f/2.8 EX DN, but it doesn't reach the same level of performance. The center quality is absolutely great for sure but the outer image regions are soft at f/2.8 and reach only good levels at medium...

The Sigma 19 mm f/2.8 EX DN is neither an outstanding nor an excellent lens. It is optically a bit worse than its 30 mm brother. Its performance on the edge of the frame doesn’t bowl you over; it would be more justifiable if we dealt with a “pancake” lens, not a full-scale and quite slow “prime.

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  compact and quite solid build,, very good image quality in the frame centre,, decent image quality on the edge of the Micro 4/3 sensor,, well-corrected chromatic aberration,, slight distortion,, moderate vignetting on the Micro 4/3 sensor,, silent, quick and accurate autofocus,, good price/quality...

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  significant vignetting on the APS-C sensor,, noticeable coma,, spherical aberration not corrected properly,, work against bright light could have been better.

This compact lens should make an ideal addition to any Micro Four Thirds or Sony NEX camera kit. Its light weight, compact size and excellent optical performance are complimented by fast auto focus speeds and good build quality.

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  Excellent sharpness from maximum aperture, Compact size, Lightweight, Decent build quality, Quick autofocus

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  Slightly high levels of barrel distortion for a prime lens

I bought this as a 28mm equivalent lens for my A6000. Performance is pretty much in line with the review though in my own tests it does not reach the admittedly dizzy heights of its 60mm brother, with the edges staying a notch below the centre.

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  Inexpensive, light to carry, good image quality

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  A bit flimsy feeling

I received this as a birthday gift and immediately began using it. My observations are not scientific but those of an artist and fine art photographer. The lens is crisp and focuses very close allowing me to do beautiful closeups.

This is a simple and versatile lens that is fun to use and renders great pictures. Highly recommended

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  Provides a nice 38mm equiv. on my OMD EM10, making it a very enjoyable 'walk everywhere' compagnion. Fast and accurate focussing. F2.8 suits most occasions (the 'natural' sensitivity of this Oly is iso 200, so already fairly high). Reasonable close focus distance.

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  A bit harsh and too analytical in sharpness; focussing ring too loose, would have been nicer to handle with a bit more resistance.

Great investment for a massive return in quality images at budget level money. Why pay more elsewhere for a few percentage improvements points? Well done Sigma...certainly worth having.

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  Excellent IQ; excellent fast focus; excellent CA control; excellent handling; one to have in the bag at all times.

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  Not a lot!

Works with the Sony Nex automatic focus/imaging system. It's non IS, but that doesn't matter. When you want to use manual focus, it's focus ring is grooved and it turns smoothly. This lense is short and allows good images, as long as it's not used for Moon shots.

Great budget lens for those who can't quite swing for a pricier pancake lens or the Olympus version. Very pleased with it thus far.

Aside from the rattling sound when this is attached to the camera and off (normal according to the various sources I have read), this lens focuses fast, is sharp and has very good color rendition. I took away 1 star because the focusing barrel is smooth.

great lens for a small budget! very useful focal length for landscape..basically ended up being my every day goto lens..

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  - small - quick focus - great sharpness when stopped down and even in the center at f2.8

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  - dont like to clonky focus element inside.. always sounds like its broken - plastic build - soft corners at f2.8 - electronic focus (useless at night)

This is an excellent little lens. Depth of field is great, autofocus is fast, manual is smooth. The lens is sturdy and well built, but nice and compact. It makes a great primary/walk about if a fixed lens is what you're in the market for. And for the price, I could not be happier.

It is a great lens for M4/3. Definitely worth the money. It is larger than I expected considering the size of the Panasonic 14mm. I don't give it 5 stars simply because I have mounted some of my old manual focus Nikon and Minolta lenses on the camera with adapter and they all out preform this lens...